Number of nations 1800-2003 scoring 8 or higher on Polity IV scale

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Ultramarine at en.wikipedia

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https://plwiki.pl/b/aa53

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Opis:

Data source: The Polity IV project. http://www.systemicpeace.org/polity/polity4.htm The y axis is the number of nations scoring 8 or higher on the combined Polity score. The years are all those available in the data, 1800-2003. Note that the Polity IV project only scores nations with greater than 500,000 total population.

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Public domain